Dictionary / Vocabulary / 一人で
ひとりで
alone; by oneself; on one's own
common word Also written 独りで、１人で
一人で原始林へ乗り込もうとは君はなんて勇ましいんだ。
How brave of you to go alone into the primaeval forest!
老婦人は３LDKの集合住宅に独りで住んでいた。
The old lady lived in a three-room apartment by herself.
老人はそこに一人で住んでいた。
The old man lived there by himself.